You can't just throw a smaller pulley or some extra piece on without considering the overall effect...but there are LOTS of good options (Stiegmeyer Porting, URD Pulleys, 7th Injector Kits, Intake and Exhaust Improvement) but you need to make sure your fueling and EM will be able to support those upgrades.

So...Better than the website - Call (877) 887-3872 then dial 3. Talk with Gadget and build up your plan from there.

Better than the website - Call (877) 887-3872 then dial 3. Talk with Gadget and build up your plan from there.
You can't just throw a smaller pulley or some extra piece on without considering the overall effect...but there are LOTS of good options (Stiegmeyer Porting, URD Pulleys, 7th Injector Kits, Intake and Exhaust Improvement) but you need to make sure your fueling and EM will be able to support those upgrades.